Small particle characteristic determination

Details Small particle characteristic determination Small particle characteristic determination

1996-10-15

1999-07-06

Hantis, K P

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

G01J 330

Patent

active

059203889

ABSTRACT:
Small particle identification is disclosed. A high intensity light source provides light at a sensing region for contact with small particles at the sensing region to cause resulting light that includes scattered light and emitted light due to heating of optically absorbing particles to incandescence with the resulting light terminating if vaporization of the optically absorbing particles occurs. A laser, having a laser cavity with the sensing region within the laser cavity, preferably provides high intensity laser light in the laser cavity for contact with the small particles at the sensing region. Utilizing optical detection, predetermined particle characteristic determination is enabled, including particle size and composition of optically absorbing particles.

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